Have you tried wax for the parting line
I'm getting ready to do some wing molds for a 60 inch and am debating on using wax and I have been thinking about putting pva on before I do the seam to get away from the pooling around the seam area .
What do you think Joe??

Super hard and flat seal

Got the second and final coat on and razor bladed out and when it cures I will pop the fuse out gingerly and block sand the cabosil flush with the parting board. Then detail the plug and do final polishing and another coat of wax (PTMW) goood stuff and wax the parting board. Then place the fuse back in the mold and foam brush on a nice thick and even coat of PVA and pop it in the warm box at 90 degrees for ten min and there will be no bubbles.
Then it is ready for the surface coat which I will be using Jeffco black tooling resin. Let it tack up and then fiberglass starts going on starting with some lighter glass and moving up to medulium glass then onto the heavy cloth.
Cheers

Parting board and seal is Done!

Itís ready for PVA and layup! NOTmy favorite part doing the parting board and seal but it is behind me and the good part is you only need it one time per mold!!
Now all I need is a 4-5 hr session and the first have will be done and they that sit for a day or so then repeat for the other side.
Cheers to progress

Mold progress

Ready to Rock

I will layup the first side tonight and let it sit for a few days before removing the parting board.
Then detail the other side , wax the PVA and layup Friday or Saturday morning then I leave for vacation Sunday till the following Saturday!
Come home to a Christmas present .